Do you have the TSB number or fix handy?

 

Go Here.

http://www.corvetteactioncenter.com/...aterleak+Guide

 

GK, water leaking down door sill is identical leak to mine so it appears. Def. must be a seal behind that Rubber weatherstrip that is the cause. What I do is stick two towels in the door right where your water leak is dripping onto the door sill when I know it's going to rain hard.

Dealer said they could fix it and would guarantee the work. I'm just really hesitant to let them do it. For one, I know the seals alone would cost me an arm with their dealer pricing. Not scared to spend the $$ but when I know I can get the same parts from GM Partshouse at a fraction of their costs, I am hesitant to bring it to them.

BILL...............any insights/experience with this leak we are having ?

 

It has to be fixed. That is a definite.

While I would love to have the dealership do it under the assumption that they know what they are doing, that is not always the case.

Won't the problem just reappear in the future? I'm curious to see if I could take it to a body shop.

I am taking my IROC with the sliced convertible roof into a local shop. I will ask them if they do seals as they will be setting me up with new seals to go with the new top. At least, I hope so.

I already have one towel under the drivers seat. I guess a second one on the passenger side won't hurt.

I'm also using an electronic silica gel device that I have placed under the drivers seat.

 

I called the guy that I've dealt with in the past when having my Z serviced at the dealer. I explained the problem I have been having and mentioned the TSB. He said this is the first he has heard of the problem.

When on the phone with him, he said I have two options. Have the tech can examine it, for a fee. Or, if I am confident with my diagnoses (thanks ajg1915), he can order the replacement parts.

I asked him if I could swing by without an appointment. He told me to come by, but he was heading out to lunch. When I got there he had left, but to his credit, he did leave me a voice mail on my cell. I did not hear the phone ring. In the voice mail, he referred me to the Service Manager.

I basically recited what I told the first guy. The manager said he would rather send it off to a body shop that deals “specifically” with weather-stripping. He also said he would not turn me away and would look at it if I really wanted to do so. Maybe the dealership doesn’t want to deal with it?

I explained to him that almost all of the resolutions say to reseal using sealant. Some of the solutions require the tear down of some stuff, but nothing major.

So, for now I have no fix. At least, from the dealership. I will give my guy a call back tomorrow and go from there.

 

Just be careful with the mouldings, they are made out of plastic and if you pull on them very hard they will crack.

BTW, those mouldings are not cheap.

Good luck with the repairs.

 

Take a look at your second picture. The weatherstripping at the base of the A pillar where it turns toward the front of the car and goes along the bottom of that black plastic triangle piece is where your leak is coming from.

On my car (2001 Coupe), the weatherstrip goes all along the bottom of that plastic triangle piece - it actually looks like a part of yours is missing or tucked underneath that black triangle piece because from the pic it only goes halfway and not all the way to the front edge.

Look back at Bills original post, there is a diagram of that piece and it shows where to seal it to stop the leak..........it worked for me.

Sorry I can't help with the passenger side leak..........Good luck !!

 

I had the same leak on the drivers side. They covered it under the 36 month warranty period. They repaired it by following the FRC roof seal repair TSB. That involves removing the roof gutter molding and re-sealing the roof/windshield/molding junction. It's involved (read expensive). Its do-able as a do it your self project and if your careful, all it will cost you is a big tube of RTV sealant. If the drip rail/roof gutter cracks, you going to need a new one.

Now I have the same issue on the passengers side. I made a work around by using some RTV to direct the water OUT of the vehicle. I added some RTV to the weather stripping to direct the water to the outside of the door frame so that it wouldn't run down the door sill cover . It will still run under the door sill cover and into the passengers foot well. So,,,,,I made an RTV dam to keep the water from running into the foot well. Its under the sill cover so its an inviable repair. I will eventually reseal the roof/windshield/drip rail joint. just having too much fun driving the car to worry about it right now!!!

If your desperate, I can pull the sill cover and take pictures of the work around. That will have to wait till I get back state side. In Guam on business.

bc

 

I have the water problem as well. I removed my headliner and plastic trim as well as the a pillar trim.

The water was coming in through the seam where the car roof joins the window sill as well as right behind my seat on the back side of where the upper seat belt attaches.

I have filled the seam with sealer today and if it stops the water I will post and let you know.

I found that getting a caulking gun and a large tube of sealer works best because you would be surprised how much sealer will go in that crack. Cut the tube at an angle and use a pair a pliers to squish the end so that you can insert it in the space between the painted roof and the black plastic window trim and just squeeze the sealant in.

 

I'm doing the same, however I am using 3M 5200 sealant so that I never have to make this repair again.

 

That 3M 5200 sealant is some good stuff. I have used it before to repair the hull to top deck seal on boats. I didn't want to go that permanent.

Let me know how yours turns out my car was really bad my wife was spraying it with the hose as I sat inside and I actually got wet.

The weirdest leak is the one right behind the ROPS.

 

I've used it before on a couple other of the vette's we had and it worked like a charm, no leaks and a permanent water tight seal.

The Z06 is leaking right under the rear windshield area where the roof is joined to the to the upper tub structure. There is a lip there that the factory uses the hard epoxy on, and it is prone to craking and that's why you get the leaks in the rear trunk, speaker and tub areas.

 

Mine was leaking right behind where the upper seat belt mount is. There is a joint there for the top, inner quarter panel and rocker panel I shot her full of sealant so far so good.

 

Very good point!!! You cant properly track down a leak until you remove enough of the interior to see where the water is entering the cabin. Good job on the repair!

BC

 

Hey does anyone know the part numbers for the left and right door window weather strip?

After having someone spray the car with pressure I discovered that water is also getting in through the window weatherstrip where it connects to the top once it's in there the weatherstrip channels it like an aqua duct back to the 90 degree point where the seal heads down, there is a gap there in the bracket on the inside and the water comes shooting out there.

Other than that I have stopped most of the leaks.

 

I had the same exact problem. I cleaned the grounds that I could get to and charged the battery; made no difference for me(although some of them were pretty dirty).

Prior to this problem, the car was parked under rain on an inclined driveway for a month, so we were pretty sure it was a water leak problem. Finally, we decided to use a hair dryer to heat up the bcm and fuse box area, and it suprisingly worked. Hope this helps...

Tamer

 

I got the same problem with my bro's 2001 Z06.

The previous owner filled the seam with some kind of crap that does not dry and the heat caused it to thin and drip everywhere. I've been working on it for a few days trying tp scrap all of the old stuff out including the hard epoxy the GM used and then I'm going to use some 3M 5200 sealant along with with an air powered caulk gun to fill in the seams.

It's a common problem on hardtops. The vibration slowly cracks the seal and it starts to leak like crazy back there.

Also check to make sure your two side post are not cracked where they bond to the strip that goes across the back under the widshield area.

The pillars are glued and riveted to the wheel wells but only glued up top.

 

I am in Florida, where, as you might have heard, the rain is just nonstop lately. My 99 has a strange leak.... the driver AND pax side carpet is SOAKED, but only under the seats, or worst case scenario, just in front of the seats.... not along the door sills, firewall, tunnel, or vertical wall leading into the trunk.... just the floor!

The first thing I checked were the utters on the driver's side w/shield trough... and they were clogged. In the morning, I'll pull the battery and check the pax side. I got to thinking though... why only under both seats? Any other thoughts on why it would be only in that spot?

Chris

 

I have the exact same leak. I took off the A frame trim on the inside and the plastic windshield header. Also upon taking the Targa top off, and pourig water into the top windshield channel, the water leaked out of the top of the A-frame pillar and runs inside the plastic trim to the bottom. I had the windshield replaced 2 yrs ago, and my guess is the windshield seal is leaking so I will have to get it replaced. It didnt leak until abt 1 yr after replacement.

I also put the towels there to catch it, but would like it corrected.

Bill .... do you think it is plausible the windshield rubber channel (where targa meets the w/s header) is leaking and needs replacement?

 

Have the same exact leak on my driver side. I have been putting a towel there to catch it. Have not tried to fix it yet. Going to seal up the hinges but i doubt that is where its coming in.